NPI registry status
Active
2026 NPPES data Pediatrics Physician NPI 1205936556 MD
Verify on CMS → Gregory Johnson, MD
Pediatrics Physician in Piedmont, South Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 80,576 in Pediatrics Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
2K
Medicare Part D claims · 132 beneficiaries · Pediatrics Physician avg: 762
Generic prescribing
87%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$16.68
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Gregory Johnson, MD filed 2,156 Medicare Part D claims in 2023 as a Pediatrics Physician in Piedmont, South Carolina, prescribing 87% generic.
- 2K
- Part D claims, 2023
- 87%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Gregory Johnson, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,156 Top 15% higher than 85% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Gregory Johnson, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Gregory Johnson, MD?
Quality data not reportedPrimary specialty
Pediatrics Physician
Medicare Part D claims
2,156 183% vs specialty avg
Specialty distribution in South Carolina
How Pediatrics Physician compares to other specialties among South Carolina providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Pediatrics Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Gregory Johnson, MD appears in the CMS NPPES registry as a Pediatrics Physician provider holding MD credentials at 1115 WREN SCHOOL RD, Piedmont, SC, 29673, with a listed phone of (864) 859-0740. NPI 1205936556 was issued on 09/25/2006.
Medicare Part D records for calendar year 2023 show 2,156 prescription claims written by this provider, covering 132 Medicare beneficiaries and totaling roughly $310K in drug spend, split 12% brand-name and 87% generic by claim count.
Pediatrics Physician is a high-volume specialty nationwide, with 80,576 enrolled providers across 56 states and an average of 762 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1205936556 |
|---|---|
| Specialty | Pediatrics Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 09/25/2006 |
Hospital and facility affiliations
Facilities where Gregory Johnson, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Prisma Health University Medical Group
Piedmont, SC
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Gregory Johnson, MD. Source: openpaymentsdata.cms.gov.
Total received
$17
Largest payer
AstraZeneca Pharmaceuticals LP
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Typical
Gregory Johnson, MD - brand share 12.0%
Pediatrics Physician average
12% brand-name claims vs 87% generic, on 2,156 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
2,156
Total Claims
$310K
Total Drug Cost
132
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,730
- Total Day Supply
- 169,281
- Brand vs Generic
- 12% brand / 87% generic
- Brand Drug Cost
- $265K
- Generic Drug Cost
- $43K
- Antibiotic Claims
- 47
Patient Demographics
- Average Patient Age
- 70.3 years
- Avg HCC Risk Score
- 0.96
- Gender Split
- 44% female / 56% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gregory Johnson, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
180 claims
- Amlodipine Besylate
Amlodipine Besylate
159 claims
- Losartan Potassium
Losartan Potassium
142 claims
- Omeprazole
Omeprazole
100 claims
- Carvedilol
Carvedilol
72 claims
- Levothyroxine Sodium 66
Levothyroxine Sodium
66 claims
- Metformin Hcl Er 64
Metformin Hcl Er
64 claims
- Lisinopril 63
Lisinopril
63 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 180 |
| Amlodipine Besylate | 159 |
| Losartan Potassium | 142 |
| Omeprazole | 100 |
| Carvedilol | 72 |
| Levothyroxine Sodium | 66 |
| Metformin Hcl Er Metformin Hcl | 64 |
| Lisinopril | 63 |
| Tamsulosin Hcl | 63 |
| Hydrochlorothiazide | 62 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pediatrics Physician Overview
How Gregory Johnson, MD fits within the Pediatrics Physician landscape nationally.
80,576
Pediatrics Physician Providers in US
56
States with Pediatrics Physician
762
Avg Claims per Provider
Gregory Johnson, MD's 2,156 claims are above the specialty average of 762.
Nearby Pediatrics Physician Providers in South Carolina
Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Johnson.
Dr. Anne Marie Abao-Beauchamp
M.D.
Bluffton, SC
Dr. Mary Abel
M.D.
Charleston, SC
Dr. Margarita Abella
MD
Charleston, SC
Francis Acaylar
Bennettsville, SC
Dr. Corinne Adkins
PA-C
Myrtle Beach, SC
Compare Pediatrics Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the South Carolina medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pediatrics Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore South Carolina
Frequently Asked Questions
What is Gregory Johnson, MD's specialty? ▼
Gregory Johnson, MD specializes in Pediatrics Physician and practices in Piedmont, South Carolina. Credentials: MD.
How much does Gregory Johnson, MD prescribe under Medicare Part D? ▼
In 2023, Gregory Johnson, MD wrote 2,156 Medicare Part D claims totaling $310K in drug costs for 132 beneficiaries.
Where is Gregory Johnson, MD located? ▼
Gregory Johnson, MD is located at 1115 WREN SCHOOL RD, Piedmont, SC, 29673. Phone: (864) 859-0740.
What is Gregory Johnson, MD's NPI number? ▼
Gregory Johnson, MD's National Provider Identifier (NPI) is 1205936556, issued on 09/25/2006.
Does Gregory Johnson, MD prescribe more brand-name or generic drugs? ▼
Gregory Johnson, MD's prescribing is 12% brand-name and 87% generic drugs by claim count, with $265K in brand drug costs.
How many Pediatrics Physician providers are there in the US? ▼
There are 80,576 Pediatrics Physician providers across 56 states in the US. The average Pediatrics Physician provider writes 762 Medicare Part D claims per year.
What drugs does Gregory Johnson, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Gregory Johnson, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Johnson, MD accept Medicare? ▼
Gregory Johnson, MD appears in CMS Medicare data with 2,156 Part D claims and 132 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Johnson, MD's credentials? ▼
Gregory Johnson, MD's NPI is 1205936556 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.